From 0b366e735729327476ec31da02de3c9c9771ddfb Mon Sep 17 00:00:00 2001 From: Erik Scholz Date: Sun, 19 Mar 2023 18:57:00 +0100 Subject: Command line switch to use F16 for memory_k and memory_v (refactor of #154) (#294) * Use F16 for memory_k and memory_v * add command line switch to use f16 instead of f32 for memory k+v --------- Co-authored-by: Ty Everett --- main.cpp | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'main.cpp') diff --git a/main.cpp b/main.cpp index e8e8df8..024b7e8 100644 --- a/main.cpp +++ b/main.cpp @@ -86,7 +86,7 @@ struct llama_model { }; // load the model's weights from a file -bool llama_model_load(const std::string & fname, llama_model & model, gpt_vocab & vocab, int n_ctx) { +bool llama_model_load(const std::string & fname, llama_model & model, gpt_vocab & vocab, int n_ctx, ggml_type memory_type = GGML_TYPE_F32) { fprintf(stderr, "%s: loading model from '%s' - please wait ...\n", __func__, fname.c_str()); std::vector f_buf(1024*1024); @@ -207,8 +207,8 @@ bool llama_model_load(const std::string & fname, llama_model & model, gpt_vocab ctx_size += n_layer*(n_ff*n_embd*ggml_type_sizef(wtype)); // w2 ctx_size += n_layer*(n_ff*n_embd*ggml_type_sizef(wtype)); // w3 - ctx_size += n_ctx*n_layer*n_embd*ggml_type_sizef(GGML_TYPE_F32); // memory_k - ctx_size += n_ctx*n_layer*n_embd*ggml_type_sizef(GGML_TYPE_F32); // memory_v + ctx_size += n_ctx*n_layer*n_embd*ggml_type_sizef(memory_type); // memory_k + ctx_size += n_ctx*n_layer*n_embd*ggml_type_sizef(memory_type); // memory_v ctx_size += (5 + 10*n_layer)*256; // object overhead @@ -293,8 +293,8 @@ bool llama_model_load(const std::string & fname, llama_model & model, gpt_vocab const int n_mem = n_layer*n_ctx; const int n_elements = n_embd*n_mem; - model.memory_k = ggml_new_tensor_1d(ctx, GGML_TYPE_F32, n_elements); - model.memory_v = ggml_new_tensor_1d(ctx, GGML_TYPE_F32, n_elements); + model.memory_k = ggml_new_tensor_1d(ctx, memory_type, n_elements); + model.memory_v = ggml_new_tensor_1d(ctx, memory_type, n_elements); const size_t memory_size = ggml_nbytes(model.memory_k) + ggml_nbytes(model.memory_v); @@ -814,8 +814,9 @@ int main(int argc, char ** argv) { // load the model { + const ggml_type memory_type = params.memory_f16 ? GGML_TYPE_F16 : GGML_TYPE_F32; const int64_t t_start_us = ggml_time_us(); - if (!llama_model_load(params.model, model, vocab, params.n_ctx)) { + if (!llama_model_load(params.model, model, vocab, params.n_ctx, memory_type)) { fprintf(stderr, "%s: failed to load model from '%s'\n", __func__, params.model.c_str()); return 1; } -- cgit v1.2.3